Mixing-machine.



W. N. STEVENS.

MIXING MACHINE.

APPLICATION FILED JUNE 1. 1917.

2 SHEETS-SHEET I.

. //v mv rok W/AL MM 4/. 375mm;

Arm/MW.

W. N. STEVENS.

MIXING MACHINE.

APPLICATION FILED JUNE 1. 1911.

Patented Jan. 21, 1919.

2 SHEETS-SHEET 2 m; w m. r m l m WILLIAM N. STEVENS, OF BROOKLYN,

COMPANY, E NEW roan, N. 2.,

NEW YORK, ,assreNon. 'ro STEVENS-AYLSWOBTH' A CORPORATION on NEW YORK.

' MIXING-MACHINE.

Specification of Letters P atent.

Patented Jan. 21, 1919.

Application filed June 1, 1917. Serial No. 172,181.

- and chemicals which 1t is desirable to mix in a dry state although the invention is applicable not only to mixing machines but also to rumbles and tumble boxesor other machines of a similar nature.

The object of my invention'is the production of a mixing machine of simple construction and of low cost to manufacture and which shall give a double rotation to the cylinder or box containing the materials to be mixed in planes at right angles to each other so as to effect a very thorough mixing of the materials.

A further object of the invention is the production of a mixing machine of the character above described which shall also be devoid of interior working parts which come into contact with the materials to be mixed so that the-mixing process will be equally thorough throughout the entire mass and after the mixing operation is finished it will be easier to thoroughly clean out the interior of the mixing box or cylinder so as to prepare it for a new charge.

A further object of the invention is the production of a mixing machine having the above characteristics and also having means permitting the cylinder or box containing the materials to be mixed to be manually turned so as to facilitate the'charging and discharging of the materials to be mixed.

Further objects and advantages ,of th invention will appear from the subjoined description the invention consisting inthe parts and combination of parts hereinafter more particularly described andthen specifled in; the claims.

In he accompanying drawings;

Figure l is a front levation of my improved mixing machine. v

Fig. 2 is a vertical cross-section of the same taken on the line 22 of Fig. 1.

Referring more particularly to the drawlindicates a suitable frame or pedestal having upright parallel arms, as illustrated, provided wlth hearings in which is journaled the shaft 2 carrying pulley 3 between said arms and adapted to receivea belt (not shown) connected with a pulley or wheel of any suitable driving machine. Keyed to theend of shaft 2 is a yoke or other support 4 having arms, as shown, the ends of which are provided with suitable bearings in which are journaled the short shafts 5 and '6 carrying the mixing cylinder or box 7. The mixing cylinder or box is provided with a removable cover 7 which may be screwed or clamped or otherwise secured to the mixing cylinder, the manner of fastening the cover thereto, however, forming no part of my invention.

Keyed to short shaft 5 is a bevel gear 8 meshing with bevel gear 9 which is keyed to.

shaft 10. Shaft 10 is supported by a suitable bearing 11 carried byextension 12 of the yoke 4. 13 indicates a sprocket which is keyed to the end of shaft 10 opposite to that end which carries bevel gear 9. A chain 14 enga es said sprocket and also sprocket 15 whic is loosely carried by shaft 2. A latch 16, provided with, a suitable handle as shown, is supported in grooves or holes in one of the upright parallel arms of the frame or pedestal 1 and is capable of horizontal movement in said grooves or holes. The end of said latch 16 is also adapted to engage the sprocket to prevent rotation of the sa'me on shaft 2 when the machine is operating. p The operation of the machine is as foll ws. a

Motion is first slowly transmitted to pulley 3 bymeans of abelt connecting with a suitable driving machine as has been described thereby causing shaft 2 and yoke 4 to rotate. When yokea reaches a position so that it lies in a plane transverse .to that shownin Eig. 1, or inother words in a Pl n P l 5. li.flQ h J li 9h n i stopped. 'Ihe latch lfi sfthen released from its engagement with jsprdcket 15 thereby p m n t mixing. cylinder NJ??? 7 to be manually turned completely around on its vertical axis, as is obvious. To 0 arge i the machine, the cylinder 7 is turned on its axis until the cover 7 is at the top of the cylinder, after which the cover is removed and the materials to be mixed are poured into the cylinder. I have found in practice that the best results are produced when the cylinder is about two-thirds filled with the materials to be mixed. After the cylinder has been charged the cover 7 is again fastened thereto, the latch 16 is again brought into engagement with the sprocket 15 and the machine is set in operation. As is apparent a rotation of shaft 2 not only rotates yoke 1 but cylinder 7 is also rotated on its axis the latter rotation being transmitted by chain 14, which winds up on sprocket 15 to sprocket 13, to shaft 10, to

. bevel gear 9, to bevel gear 8 and to short shaft 5 connected to the cylinder. After the materials in the cylinder have been thoroughly mixed the machine is slowed down and is stopped when the yoke lies in a plane parallel to the floor. The latch 16 is then again released from its engagement with sprocket 15 and the cylinder 7 turned manually until it reaches a position permitting the cover 7 to be easily and expeditiously removed. When removed, the cylinder may be turned over so as to discharge the contents therefrom by gravity.

Itwill be obvious from the foregoing description that because of the double rotation to which the mixing cylinder is subjected the materials to be mixed will roll and fall over each other when the machine is in operation thus causing all parts to be thrown into contact with all other parts,

thereby causing a very thorough mixing of the materials. Also, because of the absence of interior working parts in the mixing cylinder the latter maybe easily and thoroughly cleaned after each operation in order to prepare it for a new charge. Obviously, also, by means of the latch 16 the mixing cylinder may be brought into any desired position thus permitting it to be easily charged or discharged as desired.

What I claim as my invention is:

1. In an apparatus of the character described, a support, a cylinder pivotally mounted on said support, means for simultaneously rotating said support and also said cylinder on its axis, and means permitting said cylinder to be manually rotated on its "axis independently of 'said support.

2. In an apparatus of the character dechain connecting 3. In an apparatus of the character described, a frame, a shaft journaled in said frame, a support keyed to said shaft, a cylinder pivotally mounted on said support, means for rotating said cylinder on itsaxis when said support is rotated andmeans permitting the rotation of said cylinder independently of said support.

4. In an apparatus of the character de scribed, a frame, a shaft journaled in said frame, a support keyed to said shaft, a cylinder pivotally mounted on said support, means connecting said shaft and said cylinder for rotating said cylinder when said support is rotated and means engaging said connecting means and adapted when disengaged to permit said cylinder to be manually rotated independently of said support.

5. In an apparatus of the character described, a frame, a shaft journaled in said frame, a support keyed to said shaft, a sprocket loosely carried by said shaft, a cylinder pivotally mounted in said support, means connecting said sprocket and said cylinder for rotating said cylinder when said support is rotated and a latch normally engaging said sprocket to hold said sprocket agalnst rotation on said shaft and adapted sprocket keyed to said short shaft and a said first-named sprocket with said secon sprocket.

Signed at New York, in the county of New York and State of New York, this 31st day of May, A. D. 1917.

' WILLIAM N. STEVENS. Witnesses: 1*. 1B. 'IowNsnNn,

IRENE Lnrxowrrz. 

